Financial Instruments (Narrative) (Details) € in Millions		6 Months Ended
	Aug. 16, 2023 USD ($)	Jun. 30, 2025 USD ($)	Nov. 30, 2024 USD ($) derivative	Nov. 30, 2024 EUR (€) derivative	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Maximum leverage ratio allowed	3.75	3.50
Maximum leverage ratio allowed, after significant acquisition	4.25
Minimum interest coverage ratio required	3.00
Number of interest rate derivates held | derivative			2	2
Interest rate swaps
Debt Instrument [Line Items]
Cash collateral received		$ 0
Cash collateral pledged		$ 0
Line of Credit | Interest rate swaps
Debt Instrument [Line Items]
Derivative, notional amount					$ 350,000,000
Unsecured Debt | Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 800,000,000
Debt instrument, term	5 years
Total spread		1.625%
Borrowings outstanding		$ 444,700,000
Line of credit facility, remaining borrowing capacity		355,300,000
Debt covenant, maximum annual dividend payout amount		$ 40,000,000
Leverage ratio		1.63
Interest coverage ratio		10.51
USD borrowings | Line of Credit | Interest rate swaps
Debt Instrument [Line Items]
Derivative, notional amount			$ 125,000,000
Derivative, fixed interest rate			3.987%	3.987%
EUR borrowings | Line of Credit | Interest rate swaps
Debt Instrument [Line Items]
Derivative, notional amount | €				€ 45
Derivative, fixed interest rate			2.277%	2.277%